Indicating mechanism for typewriters



June 11, 1929. J. G. MAZA INDICATING MECHANISM FOR TYPEWRITERS FiledJuly 9, 1928 3 Sheets-Sheet l 22 w 1 49 5 JO June 11, 1929. 'J MAZA1,716,926

INDICATING MECHANISM FOR TYPEWRITERS Filed July 9, 1928 3 Sheets-Sheet 2Inventor Jfjyaza,

11 [to rnqy June 11, 1929. MAZA 1,716,926

INDICATING MECHANISM FOR TYPEWRITERS Filed July 9, 1928 5 Sheets-Sheet 5Inventor JG/Yaza,

Patented June 11, 1929.

JUAN G. KAZA, OI 'U'PLANZD, CALIFORNIA;

INDICATING MECHANISM FOR TYPEWRITEBB.

Application mainl 9, 1921!. Serial N'o. 291,181.

The present invention relates toimprovemen-ts in typewriter attachmentsand has reference more particularly been reached.

One of the important objects of the present invention-is to provide anindicating mechanism that includes a means for setting an alarm tooperate when a redetermined line on the page has been reac ed, anaudible indicating means being provided to warn the typist that the lastline to be typed on the page has been reached.

A further object is to provide an indicating mechanism that is adaptedfor association with the slidable carriage on which is mounted theplaten roller, the indicating mechanism including an alarm actuatingmember that is cooperatively associated with one of the hand wheelsassociated with the ends of the platen roller.

Still a further object is to provide an indicating mechanism fortypewriters of-the above mentioned character which includes a means fornormally rendering the audible alarm inoperative, said means beingautomatically released at a. predetermined time whereby the alarm isactuated to indicate that the end of the page has been reached.

Still a further object is to provide an indicating mechanism fortypewriters that can be readily and easily attached on a standardtypewriter construction without necessitating any alterations of thetypewriter, the indicating device being at all times positive andeflicient in its operation.

A further object is to provide an indicating mechanism for typewriterswhich is simple in construction, inexpensive, strong and durable andfurther well adapted to the purpose for which it is designed.

Other objects and advantages of the invention will become apparent fromthe following description when taken in connection with the accompanyingdrawings.

In the accompanying drawings wherein like reference characters indicatecorresponding parts throughout the same:

Figure 1 is a top plan View of the-indicating mechanism embodying myinvention showing the manner in which the same isattached on the platenroller carriageof a typewriter at one end thereof.

Figure 2 is a front elevation of the indito a mechanism for indicatingwhen the end of a page has eating mechanism showing the same mounted ona typewriter.-

Figure 3 is an end elevation thereof. Figure 4 is a side elevation ofthe operat Ing mechanism for the audible alarm, the casing beingremoved. I

Figure 5 is a vertical sectional view taken approximately on the line 55of Figured looking in' the direction of the arrows.

igure 6 is a similar section taken on the line 6-6 of Figure 4 lookingin the opposite direction. 1 1

Figure 7 is a similar section taken on the hne 77 of Figure 4 looking inthe same direction asthe section taken on the line 6-6.

Figure 8 is a vertical sectional view taken approximately on the line8-8 of Figure 4 looking in the direction of the arrows.

Figure 9 is a sectional view taken on the line 99 of Figure 7, lookingdownwardly.

Figure 10 is a sectional view taken on the line 10-40 of Fi ure 5, and

Figure 11 is a etail means for the bracket.

In the drawings wherein for the purpose view of the attaching ofillustration is shown the preferred embodiment of my invention, thenumeral 1 designates generally the platen roller of a standardtypewriter that is secured on a suitable shaft 2- that extends throughone end of the carriage 3, in the usual manner, said carriage beingadapted for slidable movement on the typewriter in the manner also wellknown in the art.

The usual hand wheel that is secured on the prO ecting ends of the shaft2 that carries the platen roller is illustrated at 4, and in the presentinstance secured on this hand wheel is the metallic band 5, the outerface of which is roughened for a purpose to be presently described.

The line spacing mechanism is not shown as the same forms no part of thepresent invention, and it is of course to be understood that the platenroller and hand wheel will rotate a certain distance each time the linespacing mechanism is actuated.-

My improved indicating mechanism ineludes an arm 6 that is detachablysecured at 4 its inner end on the end of the carriage 3, through themedium of a bracket shown generally at 7. This bracket includes avertical post 8 around which the inner end of the arm 6 which is notchedengages and is tion of the slida held thereon b means of the securingmeans shown at 9. ormed on the lower end of the vertical post 8 are thelaterally extending feet 10 that rest upon the top of the end por- Fiure 2.

he jaw 12 hasfextending transversely therethrough the screw 13, and thisscrew also passes through an opening disposed transversely in the lowerend portion of the post 8.

The head of this screw en ages with the outer face of the jaw 12 and treaded on the other end of the screw is the thumb nut 14 which is formedwith an annular groove 15 in the outer face of thehub ortion thereof.Cooperating with this annu ar groove 15 is the yoke member 16 that isattached to the outer-face of the stationary jaw 10, and this structureprovides a means whereby the thumb nut is maintained against the outerface of the jaw 11, and is prevented from moving with the screw,'butupon turning the thumb nut, the jaw 12 carried by the headed end of thescrew will be moved toward or away from the stationary jaw dependingupon the direction in which the thumb screw is rotated. A guide pin 17extends laterally from the post 8 through an opening formed in the upperend of the movable jaw toprevent rotation of said jaw, and thisarrangement is clearly disclosed in Figure 2 of the drawings. In Figure11, there is shown in detail the adjusting means for the jaws. In thismanner the bracket can be readily and easily secured or detached withrespect to the slidable carriage 3.

Secured on the outer end of the arm. 6 is the substantiallysemi-circular su porting strap 18, the inner end of this strap eingassociated with the outer end of the arm 6 in such a manner as to permitvertical swinging movement of the supporting strap when necv essary, anda finger engaglng portion 19 extends laterally fnom the free end of thestrap as disclosed more clearly in Figure 2. A spring tongue 20 isassociated with the rear end of this strap 18 for cooperation with theouter end of the arm 6, as also disclosed very clearly in Figure 3.

Removably supported by the semi-circular strap 18 is the circular casing21, the outer side thereof being open, the cover for the open outer sideof the casing constituting a cap shaped bell 22 which forms a salientpart of the present indicating mechanism.

Arranged vertically within this casing 21 are the spaced discs 23, 24,25, and 26, respectively, said discs being connected together inparallel spaced relation byany appropriate securing means shown at 27. Abracket 28 is secured on the outer face of the disc 26- and carried bythis bracket is a centrally located bolt 29, that projects through anopening formed centrally in the bell 22, and a nut 30 is threaded ontheouter end of this bolt to secure the bell in proper position withrespect to the open outer side of the casing as clearly disclosed inFigure 1.

'Adapted for cooperation with the bell forming cap 22 is the strikinghead or hammer 31 that is secured or otherwise arranged on the lower endof a lever 32 that is pivoted adjacent its upper end on the outer sideof the disc 26 as at 33, and the pivoted portion of this lever is formedwith the dogs 34 and 35, respectively, as more clearly disclosed inFigure 5 for cooperation with the toothed wheel 36, secured on the outerend of a shaft 37 that extends through the disc 26, and also through aspring housing38 arranged on the outer face of the disc 26 and locatedbetween the toothed wheel 36 and the disc 26, as more clearly shown inFigure 10.

A spring 39 is arranged in this housing 38 and is wound around the shaft37 one end of the spring being secured to the shaft, while the other endis secured to the housing. A spur gear 40 is secured on the inner endportion of the shaft 37 for disposition adjacent the inner side of thedisc 26 as clearly illustrated in Figure 10, and this spur gearcooperates with the transverse teeth of the vertically sliding plunger41 that is operable within a guide bracket 42 provided therefor on theinner face of the disc 26, it being understood of course that one sideof the bracket is cut out to permit the spur gear 40 to mesh with theteeth of the sliding plunger as more clearly shown in Figure 6. Theteeth of the plunger are designated by the numeral 43.

The plunger also projects upwardly through the top of the casing 21 andhas arranged on its upper end a head 44 for moving the plungerdownwardly whereby to actuate the shaft 37 to wind up the spring 39 forthe purpose to be presently described.

For the purpose of holding the sliding plunger 41 in a lowered positionwhereby to lock the bell actuating hammer in an inoperative poition,there is provided the latch 44 that is pivoted intermediate its ends onthe inner faceof the disc 26 as at 45, with reference more particularlyto Figure 6. The lower end of this latch engages with the teeth 43 ofthe sliding plunger 41, and a spring 46 engages with the upper end ofthe latch to normally hold the lower end in operative engagement withthe teeth 43 as also shown very clearly in Figure 6.

The releasing means for the pivoted latch 44 comprises a horizontallydisposed finger 47 formed from a relatively narrow strip of metal, andthis finger extends through an opening 48 provided in the disc 25, theouter The actuating means for the finger whereby said finger will causethe latch to swing away from engagement with the toothed 1 plunger 41comprises a pin 50 that extends radially from a shaft 51 which shaft isjournaled through the discs 23, 24, and 25. The

I pin 50 is adapted to cooperate with the pivoted inner end of thefinger in the manner to be resently described in detail.

ournuledfor rotation through the innermost disc 23 at the bottom portionthereof is the shaft 52, and secured on one end of this shaft is thesocket member 53 with which is engagement with the roughened outersurface of the band 5 that is carried by the hand wheel associated withthe adjacent end of the platen rollersupporting shaft 2. A spur gear'55is secured on theother end of the shaft 52, and is disposed adjacenttheinner face of the innermost disc 23. This spur gear meshes with the spurgear 56 secured on the end of the shaft 51, and as is clearly shown inFigure 8, the spur gear 56 is considerably larger than the spur gear 55.

Also forming a salient part of the present invention is the settablewheel 57 that is secured on a shaft 58, which shaft extends through thedisc 23 and is journaled at its end in the disc 24. A knurled or ribbedflange 59 is arranged on the outer edge portion of the wheel tofacilitate easy rotation of the same and the outer peripheral face ofthis wheel 57 is provided with the indicating graduations 60. Thegraduations are marked 011' in inches, and designate page lengths, thatis to say the number of lines that may be typed on a page, presuming ofcourse that it is known how many lines there are to the inch. Astationary pointer 61 projects from the closed side of the casing 21 atthe top thereof for cooperation with the graduations 60, as clearlyindicated in Figures 1 and 2.

spur gear 62 is secured on the shaft 58 on which the settable wheel 57is mounted and this spur gear 62 is arranged adjacent the inner face ofthe innermost disc 23, and has meshing engagement with the relativelylarge spur gear 56, thus affording a positive connection between theshaft 52, and 58 with the intermediate shaft 51.

The operation of my improved indicating mechanism may be briefly statedas follows. Initially the plunger 41 is in a raised position. The platenroller 1 is turned one-half a revolution in the reverse direction towhich it is customarily turned, after which the papers are put in asusual. The platen roller is then turne d in the right direction, and thetop of the pa per is spaced in the desired maning portion 19 is graspede mdicating mechanism e roller or wheel 54 will gement with the band 5.is then set by turning ion of the arrow untilth is in alinement with T1e plunger 41 is wardly so that the s around the shaft 3 unger in itslowered aint-ain the spring 39 the spring 46 mainh in its operativeenhed side of th 11 lowered so engagement with the The'thumb engawhereby to raise t The hand wheel 57 the same in the direct the desiredpage len the pointer 61. pressed down latch 44 will ho position, as wellin a wound taining the gagement with the toot device is the roller 54will be in associated the wheel 54 that has frictional b d 5 g thetypewriter carr eel 4 with the will be turned a c eason of the roughenedsurface gagement with the imparted to said his shaft by 1 will rotatesaid iage to the e hand wh cured thereon tance, and by r of the band broller 54, rota roller and its shaft 52, and t geared up'with the shaft5 shaft to move the pin 50.

When the end of the 51 will have b imately a complete revoluti wasinitially rear side of the inner e ger 47 will now be posi fingerwhereupon a fur pin will cause the out pivoted finger 4 end of the latcresult in the 10 engaged from the teeth 43 This will cause the spri andoperate the spur gear operates the pivoted lever 3 medium of the toothedwheel 34 and 35 so that the h intermittently strike the an audible alarmto the of the page has been reach It will thus be s description that I hing mechanism for all times be positive ing when th and due to ge hasbeen reached,

n moved approxon so that the pin dispose adjacent the nd of the pivotedfintioned in front of the ther movement of the er end portion of thegainst the upper is movement will he latch being disof the plunger 41.ng 39 to unwind, which in turn 2 through the 36 and the dogs ammer head31 will bell 22 and thus give typist that the end h 44, and th wer endof t een from the foregoing ave provided an indicattypewriters that willat and efficient for indicatge has been reached, the device can bepewriter construchout necessitating s of the typewriter mechanism is tobe e end of a pa its simplicit readily installed on ty tions of variousmakes w any alterations of the part with which the present While I haves bodiment of my in stood that minor size, shape rrangement of parts maybe resorted to latch for holding the spring operable means for settingmechanism,

without departing from the spirit of the invention and the scope of theappended claims.

Having thus described the invention, what I claim as new is v 1 Thecombination with a typewriter including the platen roller, the usual hanwheel on each end of the roller for actuating the same, and the movablecarriage for the roller; of means for actuating an audible alarm toindicate a page end, said means 1ncluding a casing supported on'thecarriage, a bell carried by the casing, a striking hammer' for the bellto sound an alarm, spring operating means for actuating the hammer,

in a wound condition, and means operable by said hand wheel forreleasing the latch to effect the actuation of the hammer, and sound analarm when a page end is reached, and manually said releasing 2. Thecombination with a typewriter including a platen roller, the usual handwheel on each end of the roller for actuating the same, and the movablecarriage for the roller, of a casing mounted on the end of the carriage,a bell carried by the casing, a striking hammer for the bell, springcontrolled means for actuating the hammer, mechanism for winding up thespring, a pivoted latch associated with the mechanism to hold the springin a wound condition, means operable by the hand wheel for releasingsaid latch, and automatically effecting the actuation of the strikinghammer to sound an alarm to indicate a page end, and manually settablemeans for positioning said releasing means.

3. The combination with a typewriter including the platen roller, theusual hand wheel on each end of the roller for actuating the same, and amovable carriage for the roller; of a casing supported on one end of theslidable carriage, a bell carried by the casing, a striking hammer forsaid bell, spring controlled means for actuating the striking hammer,mechanism for winding the spring, a pivoted latch for cooperation withsaid mechanism to hold the spring in a wound condition, a pivoted fingerarranged in the casing for cooperation with the latch to move the sameto an inoperative position and automatically effect the actuation of thestriking hammer to sound an alarm when a page end is reached, a shaftcarried by the casing, a rolleron the shaft for engagement with the handwheel to rotate therewith, a member operable by said shaft forengagementwith the finger to actuate the same, and manually'settablemeans for controlling the period when said member will actuate the Ifinger.

4:. The combination with a typewriter including the platen roller, theusual hand wheel on each end of the roller for actuating d 1 strikingwith respect to t e finger.

the casing, a striking hammer roller; of a casing supported on one endof the slidable carriage, a bell 'carried by the casing, astrikinghammer for said bell, spring controlled means for actuating thehammer, mechanism for winding the spring, a pivoted latch forcooperation with said mechanism to hold the spring in a wound condition,a pivoted finger arranged in the casing for cooperation with the latchto move the same to an inoperative position and automatically effect theactuation of the striking hammer to sound an alarm when a page end isreached, a shaft carried by the a member operable to wind said spring, acasing, a roller on the shaft for engagement with the hand wheel torotate therewith, an additional shaft journaled for rotation in thecasing, intermeshing gears between said shafts, a pin carried by saidadditional shaft for actuating said finger, and manually settable meansfor ositioning said pin initially 5. The combination with a typewriterincluding the platen roller, the usual hand wheel on each end of theroller for actuating the same, and a movable carriage for the roller; ofa casing supported on one end of the slidable carriage, a'bell carriedby for said bell,

spring controlled means for actuating the striking hammer, mechanism forwinding the spring, a pivoted latch for cooperation with said mechanismto hold the spring in a wound condition, a pivoted finger arranged inthe casing for cooperation with the latch to move the same to aninoperative position and automatically eflect the actuation of thestriking hammer to sound an alarm when a page end is reached,. a shaftcarried by the casing, a roller on the shaft for engagement with thehand wheel to rotate therewith, an additional shaft journaled forrotation in the casing, intermeshing gears between said shafts, a pincarried by said additional shaft for actuating said finger, manuallysettable means for positioning said pin initially with respect to thefinger, said last mentioned means comprising a shaft journaled throughone side of the casing, a graduated wheel secured on said shaft, apointer on the casing for cooperation with the graduations on the wheel,and intermeshing gears carriedby the last mentioned shaft and the pincarrying shaft.

6. The combination with a typewriter including the platen roller, theusual hand wheel on each end of the roller for actuating the same, and amovable carriage for the roller; of a casing supported on one end of-theslidable carriage, abell carried by the casing, a striking hammer forsaid bell, spring controlled means for actuating the striking hammer,mechanism for winding the spring, a pivoted latch for cooperation withsaid mechanism to hold the spring in a wound condition, a pivoted fingerarranged in the member operable by said shaft for engagecasing forcooperation with the latch to ment with the finger to actuate the same,10 move the same to an inoperative position manually settable means forcontrolling the and automatically efl'ect the actuation of the periodwhen said member will actuate the striking hammer to sound an alarm whenfinger, and means for forcibly moving the apage end is-reached, a shaftcarried by the -r01leroutofeng1gement with the hand'wheel. casing, a;roller on the, shaft for engagement In testimony whereof I aflix mysignature. with the hand wheel to rotate therewith, a v JUAN G. MAZA.

